Fix warning in getting relay version

src/scripts/extensions/relay.sh

@@ -2,8 +2,7 @@
 get_relay_version() {
  local ext=$1
   if [[ "$ext" =~ ^relay$ ]]; then
-  relay_release
-    get -s -n "" "${relay_release:?}" 2<&1 | xargs
+    get -s -n "" "${relay_release:?}"
   else
     relay_version="${ext##*-}"
     echo "v${relay_version/v//}"